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#ifndef LINUX_UMSDOS_FS_H
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#define LINUX_UMSDOS_FS_H
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/*#define UMS_DEBUG 1   // define for check_* functions */
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/*#define UMSDOS_DEBUG 1*/
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#define UMSDOS_PARANOIA 1
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#define UMSDOS_VERSION  0
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#define UMSDOS_RELEASE  4
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#define UMSDOS_ROOT_INO 1
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/* This is the file acting as a directory extension */
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#define UMSDOS_EMD_FILE         "--linux-.---"
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#define UMSDOS_EMD_NAMELEN      12
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#define UMSDOS_PSDROOT_NAME     "linux"
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#define UMSDOS_PSDROOT_LEN      5
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#ifndef _LINUX_TYPES_H
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#include <linux/types.h>
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#endif
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#ifndef _LINUX_LIMITS_H
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#include <linux/limits.h>
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#endif
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#ifndef _LINUX_DIRENT_H
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#include <linux/dirent.h>
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#endif
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#ifndef _LINUX_IOCTL_H
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#include <linux/ioctl.h>
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#endif
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#ifdef __KERNEL__
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/* #Specification: convention / PRINTK Printk and printk
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 * Here is the convention for the use of printk inside fs/umsdos
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 *
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 * printk carry important message (error or status).
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 * Printk is for debugging (it is a macro defined at the beginning of
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 * most source.
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 * PRINTK is a nulled Printk macro.
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 *
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 * This convention makes the source easier to read, and Printk easier
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 * to shut off.
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 */
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#       define PRINTK(x)
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#       ifdef UMSDOS_DEBUG
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#               define Printk(x) printk x
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#       else
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#               define Printk(x)
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#       endif
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#endif  /* __KERNEL__ */
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struct umsdos_fake_info {
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        char fname[13];
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        int len;
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};
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#define UMSDOS_MAXNAME  220
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/* This structure is 256 bytes large, depending on the name, only part */
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/* of it is written to disk */
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/* nice though it would be, I can't change this and preserve backward compatibility */
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struct umsdos_dirent {
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        unsigned char name_len; /* if == 0, then this entry is not used */
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        unsigned char flags;    /* UMSDOS_xxxx */
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        unsigned short nlink;   /* How many hard links point to this entry */
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        __kernel_uid_t uid;     /* Owner user id */
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        __kernel_gid_t gid;     /* Group id */
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        time_t atime;           /* Access time */
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        time_t mtime;           /* Last modification time */
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        time_t ctime;           /* Creation time */
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        unsigned short rdev;    /* major and minor of a device special file */
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        umode_t mode;           /* Standard UNIX permissions bits + type of */
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        char spare[12];         /* unused bytes for future extensions */
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                                /* file, see linux/stat.h */
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        char name[UMSDOS_MAXNAME];      /* Not '\0' terminated */
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                                /* but '\0' padded, so it will allow */
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                                /* for adding news fields in this record */
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                                /* by reducing the size of name[] */
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};
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#define UMSDOS_HIDDEN   1       /* Never show this entry in directory search */
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#define UMSDOS_HLINK    2       /* It is a (pseudo) hard link */
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/* #Specification: EMD file / record size
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 * Entry are 64 bytes wide in the EMD file. It allows for a 30 characters
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 * name. If a name is longer, contiguous entries are allocated. So a
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 * umsdos_dirent may span multiple records.
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 */
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#define UMSDOS_REC_SIZE         64
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/* Translation between MSDOS name and UMSDOS name */
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struct umsdos_info {
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        int msdos_reject;       /* Tell if the file name is invalid for MSDOS */
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                                /* See umsdos_parse */
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        struct umsdos_fake_info fake;
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        struct umsdos_dirent entry;
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        off_t f_pos;            /* offset of the entry in the EMD file
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                                 * or offset where the entry may be store
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                                 * if it is a new entry
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                                 */
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        int recsize;            /* Record size needed to store entry */
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};
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/* Definitions for ioctl (number randomly chosen)
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 * The next ioctl commands operate only on the DOS directory
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 * The file umsdos_progs/umsdosio.c contain a string table
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 * based on the order of those definition. Keep it in sync
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 */
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#define UMSDOS_READDIR_DOS _IO(0x04,210)        /* Do a readdir of the DOS directory */
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#define UMSDOS_UNLINK_DOS  _IO(0x04,211)        /* Erase in the DOS directory only */
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#define UMSDOS_RMDIR_DOS   _IO(0x04,212)        /* rmdir in the DOS directory only */
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#define UMSDOS_STAT_DOS    _IO(0x04,213)        /* Get info about a file */
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/* The next ioctl commands operate only on the EMD file */
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#define UMSDOS_CREAT_EMD   _IO(0x04,214)        /* Create a file */
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#define UMSDOS_UNLINK_EMD  _IO(0x04,215)        /* unlink (rmdir) a file */
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#define UMSDOS_READDIR_EMD _IO(0x04,216)        /* read the EMD file only. */
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#define UMSDOS_GETVERSION  _IO(0x04,217)        /* Get the release number of UMSDOS */
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#define UMSDOS_INIT_EMD    _IO(0x04,218)        /* Create the EMD file if not there */
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#define UMSDOS_DOS_SETUP   _IO(0x04,219)        /* Set the defaults of the MS-DOS driver. */
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#define UMSDOS_RENAME_DOS  _IO(0x04,220)        /* rename a file/directory in the DOS
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                                                 * directory only */
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struct umsdos_ioctl {
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        struct dirent dos_dirent;
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        struct umsdos_dirent umsdos_dirent;
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        /* The following structure is used to exchange some data with
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         * utilities (umsdos_progs/util/umsdosio.c). The first releases
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         * were using struct stat from "sys/stat.h". This was causing
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         * some problem for cross compilation of the kernel.
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         * Since I am not really using the structure stat, but only
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         * some fields of it, I have decided to replicate the structure
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         * here for compatibility with the binaries out there.
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         * FIXME PTW 1998, this has probably changed
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         */
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        struct {
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                unsigned long st_dev;
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                ino_t st_ino;                   /* used */
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                umode_t st_mode;                /* used */
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                nlink_t st_nlink;
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                __kernel_uid_t st_uid;
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                __kernel_gid_t st_gid;
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                unsigned long st_rdev;
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                off_t st_size;                  /* used */
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                unsigned long st_blksize;
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                unsigned long st_blocks;
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                time_t st_atime;                /* used */
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                unsigned long __unused1;
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                time_t st_mtime;                /* used */
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                unsigned long __unused2;
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                time_t st_ctime;                /* used */
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                unsigned long __unused3;
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                uid_t st_uid32;
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                gid_t st_gid32;
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        } stat;
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        char version, release;
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};
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/* Different macros to access struct umsdos_dirent */
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#define EDM_ENTRY_ISUSED(e) ((e)->name_len!=0)
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#ifdef __KERNEL__
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#ifndef LINUX_FS_H
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#include <linux/fs.h>
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#endif
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extern struct inode_operations umsdos_dir_inode_operations;
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extern struct inode_operations umsdos_rdir_inode_operations;
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extern struct file_operations umsdos_dir_operations;
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extern struct file_operations umsdos_rdir_operations;
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#include <linux/umsdos_fs.p>
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#endif                          /* __KERNEL__ */
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#endif